Calculating machine



R. G. C. BOA.

CALCULATING MACHINE.

APPLICATION man APR. 21. 1921.

Patented May 30, 1922.

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' HIE ATTEIRNEY WITNEEEEE R. G. C. BOA.

CALCULATING MACHINE.

APPLICATION FILED APR. 21. I921.

1,418,062. Patented May 30, 1922.

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WITNESS E5 INVENI-UR M HIE ATTURNEY- UNITED STATES PATENT- oFFica. v

nonnn'r e. 0.301s, or cnrcaco, ILLINOIS, 'AssIeNo'n mo REMINGTON accoun'rmo mncmnn oonronA'rIoN, on NEW YORK, 1w. 2., A CORPORATION or NEW "1031:.

v CALCULATING MACHINE.

Specification or ilette'ra Ifatent. Patented May 30, 1922;

Application filed April 21, 1821. Serial No. 463,154.

Illino1s,-have invented certain new and useful Improvements in Calculating Machines, of which'the following is a specification.

My invention relates to calculating machines and is embodied in the presentinstance in a Remington-Wahl combined typewriting and calculating machine of' the character known on the market as a cross footer, and which machine is disclosed in the patent to John C. Wahl #1,270,471, dated June 25, 1918; although it should be understood that the. invention" is not restricted to embodiment in such machines.

In the construction disclosed in the said patent certain of the vertical totalizers which are carried by and adjustable along the carriage are provided with two. different sized cams detachably fixed thereto. These cams'are adapt-ed, during the travel of'the carriage, to coact with a follower which forms part of the actuator-control or gear shifting mechanism of the cross totalizer. When a cam coacts with the follower the movement of the latter actuates the control mechanism to bring about, at'the operation of a numeral key, either subtraction in the cross totalizer, or to disconnect and render the latter inoperative, depending on) the character or size of the cam in operation.

- In accordance with the present invention I provide on each vertical totalizer, or on each of a number of dummies which may be substituted for such'totalizers if desired, a cam which is adjustably mounted thereon so that it may be set to coact with a follower such as that referred to above, in the same manner as the two different sized cams dis-- closed in said patent, and also to obtain a setting of each ofsaid cams for addition. In the patent to John'C. Wahl, #1349924,

dated August 10, 1920, there is disclosed two adjustable cams on each vertical totalizer to coact with the control mechanisms of two cross totalizers.

One of the main objects of my present invention is to provide an improved adjustable cam mechanism of the general character specified. A. further object of the invention, generally stated, may be said to be to provide simple, strong and efficient means for effecting an adjustment of a cam on a'oarr1er, or totallzer, carried by the carriage,

whereby said cam may bereadily and accu,

the follower of a totalizer-actuator control mechanism.

rately set and effectively and firmly held in i any one of several positions to coact with To the above and other ends which will hereinafter appear my invention consistsin the features of construction, 'arran ements of parts, and combinations of devices .set

forth in the following description and more particularly pointed out in the appended claims.

In the accompanying drawings wherein like reference characters indicate 'corresponding parts in the various views,

Fig. 1 is .a fragmentary front elevation showing a portion of a Remington-Wahl cross footing machine equipped with two different sized vertical totalizers, the righthand totalizer 5 being provided with one form of cam adjusting devices embodying my invention, and the left-hand totalizer 5 being provided with a slightly different form of cam adjusting devices embodying the invention.

Fig. 2 is an enlarged detail fragmentary front- View, with parts broken away,of a detached viertical totalizer, fdummy, or iarrielr 5 such as is shown at the right in Fig. 3 is a fragmentary vertical fore-andaft sectional View of the same taken on the line 33 of Fig. 2 and looking in the direction of the arrow at said line.

Fig. 4 is a horizontal sectional View of the same taken on the line 44' of Fig. 2 and tooking in the direction of the arrow at said Fig. 5 is a detail fragmentary front view of a portion of the locking plate of the carrier 5.

Fig. 6 is a view in section through the carrier on the line 6-6 of Fig. 2 and lookand looking in the direction of the arrow at said line.

Fig. 9 is an enlarged detail fragmentary front elevation, with parts sectioned away, of the carrier 5' and the cam-adjusting means.

In the drawings I have illustrated only so much of a Remington-Wahl cross footing machine as may be necessary to arrive at an understanding of my invention in its embodiment therein; various of the details of said machine not shown in the. accompanying drawings being well known in the art and fully illustrated in the hereinbefore mentioned Patent #1,270,471.

It will be understood that, in the.present 'instahce, the follower 1 carried'by a crank arm 2 which is mounted 'on a rock shaft pivoted in the fixed actuator frame 3, may be connected in the usualmanner with the actuator-control or gear shifting mechanism of the cross footer (not shown), as is full illustrated in the said Patent #l,270,471. As is well understood, the follower 1 in its lowermost position sets the control mechanism of the cross footer for subtraction, whereas, the uppermost position of said follower, to which it is moved by a sprin sets said control mechanism for addition. An intermediate position of said follower, under control of'a cam, results in said control mechanism being set to disconnect the actuator of the 'cross footer.

The member 4 which is, or may be, of the usual construction, and is sometimes referred to as the vertical or main truck or calculator carriage is connected to travel right and left with the typewriter carriage. One or more so-called vertical totalizers 5 or 5 are detachably mounted on the truck 4, and each is adjustable to different set positions along the truck, where it may be held by a spring-pressed, hand released latch 6 or 6 adapted to engage teeth 7 on the truck.

The adjustable cam of my invention,-

which coacts with the follower 1 to auto matically position the actutor-control or gear shifting mechanism, in some instances is mounted on each of the vertical totalizers 5 or 5. In other instances it is mounted on a so-called dummy, which may comprise a frame'such as the frame of a totalizer 5 or 5 but which contains no totalizer mechanism therein and merely constitutes an adjustable carrier for the adjustable cam, and

for other parts, such for axample as the heel 8 (see Fi 7) for the pick-up beam (not shown). ach of these dummies is intended to be used in the place of a totalizer 5 or 5 where the character of the work is such that no computation is to be entered in a vertical totalizer within the field occupied by the dummy. With this explanation in mind it will be understood that when I refer herein to a carrier for the plate, about midway in the length thereo cam, such term is intended to apply to the sppport on which the cam is adjustably mounted whether such support be a totalizer 5 or 5, a dummy, or other form of support for the cam.

I have shown In invention in two forms, one illustrated in igs. 2-6, inclusive, being adapted for a wide totalizer and the other, shown in Figs, 7, 8 and 9, being adapted for a narrow totalizer. The two forms are con structed on the same principle but differ as to certain details.

I will first describe the construction disclosed in Figs. 2 to 6 inclusive. The frame of a totalizer 5, or a corresponding dummy, has its parallel side plates 9 apertured at 10 to receive and have seated therein lugs or reduced end portions 11 of a verica ly disposed supporting plate 12, thus fixedly securing said plate to the frame. Projecting forwardly from said supportin 3 IS a supporting{ stud 13. This stud is riveted at its rear en as at 14:, to the supporting plate, and is interiorly tapped at its forward end to receive a headed screw 15. The stem of this screw passes through a hole in a fixed locking and guiding plate 16, while the head of the screw bears against the forward face of the plate, thus fixedly connecting the lower end of the locking plate to the carrier and maintaining the plate in front of and spaced away from the frame of the carrier. The upper end of the locking plate 1s secured to the carrier, as best shown in Fig. 6, by riveting forwardly projecting hollow supporting studs 17 to the front cover plate of the frame, as indicated at 18. The forward end portion of each stud 17 is reduced at 19 forming a shoulder 20. The re duced end of each stud is received in a hole in the locking plate, the plate being held against the shoulder 20 on the stud. by the head of an associate screw 21, the stem of which is threaded into the interiorly tapped opening in its stud. The plate 16 is thus fixedly held on the carrier by the screws 15 and 21.

Arranged parallel with and bearing against the front face of the supporting plate 12 is the adjustable cam plate 22, its lower edge constituting an actuating cam 23. The plate 22 is slotted at 24 to enable the stud 13 to pass freely therethrough and not lnterferewith a rectilinear up and down adjustment of the cam plate. The side edges 25 of the plate 22 coact with the inner faces of the overlapping parallel side plates 9 of the frame, thus preventing a longitudinal displacement of the plate 22 and guiding the latter in its up and down adjustments. Intcrmediate the locking plate 16 and the body portion of the frame, is a plate 26, which in the present instance comprises a cross bar 27 from which an upwardly projecting arm 28 extends. The cross bar is fastened near its ends to the plate 22 by two intermediate shouldered rivets 29, each riveted at one end 30 to the cross bar 27 and at the other end 31 to the plate 22. In this manner, the parallel plates 26 and 22 are fixedly connected to move together as one piece, the plate 22 being off-set rearwardly with reference to the plate 2650 that the cam 23 may coact with the follower 1. I v

The plates or members 27-28 and 22 are in effect one piece, and from certain aspects of my invention may be so regarded. In

1 order to adapt the construction to the Remington-Wahl machine, as at present consti titted, the member 22 is locatedbeneath the body portion of the totalizer or dummy.

where it is required to coact with the follower' 1. On the other hand, the member 27- 28, and the means which coact therewith to effect an adjustment of the cam, are off-set forwardly soas to bring these parts in front of the totalizer where suflicient room is provided therefor and where they are readily accessible to the operator for purposes of adjustment. I have heretofore pointed out that the side edges 25 of the cam. plate 22 coact with the side plates 9 of the totalizer frame to guide said cam plate and prevent a right and left-hand movement thereof (and the parts fixed thereto) relatively to the totalizer frame. These parts 22 and 27-28 are guided front and rear and prevented from fore-and-aft displacement on the frame of the totalizer by the fixed plates 12 and 16. The former coacts with the plate 22 to prevent a rearward displacement of the parts whereas the plate 16 coacting with an intermediate member 35, to be hereinafter described, prevents a forward displacement of the connected parts 22 and 27--28. The arm 28 is arranged centrally of the cross bar 27 and carries near its upper end a forwardly projecting headed pin 32, riveted thereto at 33 and passing through a. vertically disposed slot 34 in the fixed plate 16; the slot 34 extending in the same direction and being located in the same fore and aft plane as the slot 24 in the plate 22. It will be seen that the pin 32 is arranged at about equal distances from the ends of the cam plate 22, or the bearing portions 25 thereof, so that an up and down movement transmitted to the pin is effective to move the plates 26 and 22 to- I gether without the latter binding at its guiding surfaces.

An upright arm, member or link 35 is pivoted at its upper end on the pin 32 so as to be connected to the plate 26 (and to the cam 23 movable with said plate) to have a bodily up and down movement therewith,

and also to have a pivotal movement rela-' tively thereto. The lower end of the link carries a forwardly projecting pin 36, riveted thereto at 37" "and formed with a head I 38 at its forward end. This'pin extends through a guide slot 39 in the fixed locking shifting mechanism of the cross foot totalizer for subtraction. When the pin is moved to the upper end of the angular slot, as shown in Fig. 1, the cam 23 will be adjusted for addition, and when the pin is movedto the intermediate position the ad- 'ustable cam will be set for disconnect. he cam is set to its disconnect position by moving the finger piece 40 leftward as far as it will go. I have provided on the front face of the locking plate 16 three symbols A, D, S, each arranged adjacent to that part of the cam slot 39 to which the symbol corresponds, so as to aid the operator in setting the adjustable cam 23 by bringing the pin 36 to its proper position relatively to the slot 39 for addition, disconnect, or subtraction, as indicated respectively by the symbols A, D, S

It will be seen that each of these three positions of adjustment of the cam plate 22 saccurately attained and positively determined by bringing the pin 36 at one movement to an end wall of a slot, i. e., either the upper or lower right-hand end of the slot or the left-hand end thereof, where the symbol D appears. If it is borne in mind that in actual practice the extent of adjustment of the cam plate 22 from its highest point indicated by the symbol A to its lowest point indicated by the symbol S is only about one-eighth of an inch, then it will be understood how important it isto prov de means for accurately and positively defining these three positions of adjustment of the cam, and for positively and accurately holding the cam against accidental displacement from any ofthese positions to which it. may be adjusted. The difiiculty of providing efficient means for a construction of this kind by reason of this fine adjustment and the small space which may be alotted to some of the parts will also be better appreciated, as will the advantages in this connection of the V-shaped guide slot 39.

In order to aid the operator in setting the hand-controlled pin 36, and in order to lock it and the parts controlled thereby in different set positions to which they may be adjusted, I loosely mount on the pin 36 a finger piece 40 by which the pin and the parts controlled thereby may be moved.

member 44 is withdrawn.

The outer end of this finger piece has an enlarged opening 41 in which the head 38 of the pin is received. The bottom wall 42 of this opening forms a bearing against which one end of a coiledexpansion spring 43 is seated; said spring surrounding the pin. and hearin at its opposite end against the head 38. The spring 43 tends to move the finger iecerearwardly to the positlon shown 1n 1 ig. 3, but enables it to be moved forward on the pin to release the lock which holds the link 35, and the parts on the carrier controlled thereby, in any of thethree set positions to which they may be adjusted. Thus the rear end portion of the finger piece is reduced to form a rounded locking member or spring-pressed locking plunger 44.

which is adapted to seat itself in any of three locking notches, recesses or, depressions 45 in the. front face ,of the locking plate 16 when brought into register therewith. When the locking member is seated in one of the depressions 45 an interlocking positive connection with the plate 16 is established which prevents a displacement of the pin 36 in its slot 39 until the locking This may be readily effected by sliding the finger piece 40 forward on the pin 36 against the force of the spring 43. The pin may then be adjusted to a new positionalong the slot 39 with the aid of the finger piece, and again locked in such new position; causing the parts on the carrier controlled by the link to be locked against movement on the carrier. As hereinbefore pointed out, the cam .adjusting means illustrated in Figs. 7, 8 and 9 are intended more particularly for a comparatively narrow carrier, the one shown being a three-wheel totalizer. Many of-the details of this construction are similar tothose previously described, and to avoid repetition of description, various of the parts in the construction which correspond to those previously described willbe designated by correspondin reference numerals with the exponant a a ded thereto.

Inthe modified construction the locking plate 16 is connected to the carrier 5* in a difl'erent manner'froi'n that previously described. Thus the parallel side plates 9 0f the carrier 5 are extended further for-- ward thanthe corresponding plates of the other construction, and receive between them the locking plate 16. lach side plate 9 is apertured at. two points 46 to receive outwardly extending lugs 47 on a side edge of the locking plate 16, and thus fixedly secure the plate 16 to the frame. The plate 26, to which the cam carrying plate 22 is fastened by shouldered rivets 29, has its lower parallel side edges 48 arranged to coact with the inner faces of the side plates 9 ofthe carrier, thereby guiding the plate 26" and its up and down adjustment, as well as those previously described, and are operated in a like manner.

From the foregoing description it will be understood that/the pivotal movement of the link 35, or 35, relatively to the adjustable cam 23, or 23 respectively, is governed by the walls of the guide slot 39, or 39 respectively, which constitute a fixed part of the carrier, and that such relative movement of the link, governed in the manner stated, efl'ects an up and down adjustment of the adjustable cam and determines the extent of such adjustment. While I prefer to make the slot 39, or 39, in the nature of a guide slot, by which a camming it essential from certain aspects of the invention that the fixed guide on the carrier, with which the link coacts to regulate the adjustment of the adjustable cam, shall be formed by slotting the locking lateQ Generally stated, the invention invo ves governlng means which coacts with the link to govern its movement .relativel to the adjustable cam, and to thereby etermine the extent of bodily movement of the link and the adjustment of the adjustable cam which moves bodily therewith. The invention also will be understood, generally stated, to include a link or member pivotally connected at one end with the adjustable cam and adapted tomove bodily therewith, with means for connecting the other end of the link at any one of a number of different points on a fixed plate carried by, the carrier, and thus adjust and hold the cam in its adjusted position.

It will be seen that in the'present constructlon the manner of mounting the adjustable cam and the parts by which it is adjusted and locked in adjusted position, is such that they cannot drop, or be accidentally detached, from the carrier, which detachment might result in the parts in question being misplaced or lost.

Various changes may bemade without departing, from myinvention.

What I claim as new and desire to secure by Letters Patent, is,

1. In a calculating machine, the combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier adjustable to different positions along said carriage, 'a cam adjustable on said carthe other plate so that the position of the rier and co-operative with said follower, a link relatively to the slot determines the guide fixed on the carrier, and an operating position of adjustment of said adjustable member connected to said cam and engaging cam.

and movable bodily along and guided by 6. In a calculating machine, thecombina- 70 said guide and which determines the point of tion of a carriage, a follower forming part adjustment of the adjustable cam by the adof a totalizer-actuator control mechanism, a

, justment of said operating member along carrier adjustable to different Positions along th fi d guid v i said carriage, a cam adjustable on said car- 2. In a calculating ma'chine,: the combinarier and co-operative with said follower, and tion of a carriage, a follower forming part means for controlling the adjustment of said of a totalizer-actuator control mechanism, a cam comprising a link pivotedto a part fixed carrier adjustable to different positions along to move bodily with and relatively to said said carriage, a cam adjustable on said carcam, a relatively fixed part with a slot thererier and co-operative with said follower, 'a in having walls that act as a cam, a connecguide'cam fixed on the carrier, -and a contion from said link to said slot whereby a necting member operatively connected at one displacement of said connection inthe slot end with said adjustable cam and co-operwill change the position of the link and thus ative at its other end with said fixed guide determine theadjustment of said adjustable necting member justable cam.

cam to effect a camming action on said concam, and means for locking said link at any and thereby adjust the adof several different positions to which it may be adjusted in said slot.

3. In a calculating machine, the combina- '7. In a calculating machine, the combination of a carriage, a follower forming part tion of a carriage, a follower forming part of a totalizer-actuator control mechanism, a of atotalizer-actuator' control mechanism, a carrier adjustable to different positions along carrier adjustable to diiferent positions along said carriage, an actuating cam mounted to said carriage, two parallel plates one fixed receive a rectilinear adjustment to different to the carrier and the other adjustable therepositions on said carrier and to'coact with on and carrying a cam, a link intermediate said follower, a hand-controlled adjusting Said plates and pivoted to one of them and link pivotally connected with said adjustable connected to the other by a guide slot therecam to move bodily therewith and to receive in having inclined walls that act as a cam a pivotal movement relatively thereto, and so that the position of the link relatively to a guide fixed to said carrier and with which the slot determines the position of-adjustsaid link coacts, the position of the link rela-. ment of said adjustable cam, a hand-con-- tively to said fixed guide determining the trolled member connected to said link for position of rectilinear adjustment of said shifting it todifferent positions in the guide actuating cam. v I slot, locking means for locking said hand- 4, In a alculating machin th oo binacontrolled member in any of several differtion of a carriage, a follower forming part ent positions to which it may be shifted with of a totalizer-actuator control mechanism, a said link, and means for affording a movecarrier adjustable to different positions along m n of said'hand-controlled member indesaid carriage, acam adjustable on said carpendently of said link to control the engagerier and co-operative with said follower, and .ment and release of said locking means. means for controlling the adjustment of said 8. In a calculating machine, the combina- 110 cam comprising a link'pivoted toa part fixed 011 of-a carriage, a follower forming part to move bodily with aid cam so that said of the totalizer-actuator control mechanism, cam and link move together bodily and th a carrier adjustable to different positions link may turn relatively to said cam, a fixed along said carriage, a cam adjustable on the part of the carrier having a slot therein, and carrier and cooperative with said follower, 115 a connection from said link to said slot, and means for controlling the adjustment of whereby a displacement of said connection saidcam comprising a member connected in the slot will change the position of the with said cam to receive a bodily movement link and thus determine-the adjustment of therewith a so to re eive a movement said adjustable cam. relatively thereto during the adjustment of 5. In a calculating machine, the combinathe cam on its carrier, and means coacting tion of a carriage,-a follower formin part with said member to govern its said relative. of a totalizer-actuator control mechan1sm,a movement and thus determine the bodily carrier adjustable to different positions along movement thereof and the adjustment of the said carriage, two parallel plates one fixed cam connected therewith.

to the carrier and the other adjustable'there- 9. In a calculating machine, the combinaon and carrying a cam,,one of said plates tion of a c rriag a l r rm g p having .a slot therein, and a link intermeof the totalizer-actuator control mechanism, diate said plates and pivoted to one'of them a carrier adjustable to different positions and having a camming action in the slot of along said carriage, a cam adjustable on the 139 carrier and cooperative with said follower,

and means for controlling the adjustment of said cam comprising a member connected with said cam to receive a bodily movement therewith and also to receive a movement relatively thereto, a finger piece connected opening or slot t erein, and a hand-conwhich they may be adjusted.

trolled member connected with said actuating cam and having apart entering the V- shaped slot and governlng by its movement along said slot the adjustment of the actuating cam.

11. In a calculating machine, the combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier adjustable to different positions along said carriage, an actuating cam adjustable on the carrier and co-operative with said follower, and means for controlling the adjustment of said cam comprising a governing member fixed to said ca rrier and having an angular opening or slot therein, a member connected with said actuating cam and having a part entering said slot and locating the actuating cam in different adjusted positions according to the disposition of said part at different point-salong said angular slot, a finger piece connected to said member for adjustingit, and locking means at different points along the angular slot for co-operation with said finger piece to lock said member and the. adjustable cam controlled thereby in different 12. In a calculating machine, the combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier adjustable to different positions along said carriage, a cam adjustable on said carrierand co-operative with said follower, a plate fixed on said carrier and having a slot therein, a member connected with said cam and having a pin received in and ad justable along said slot, and means for retaining the pin at any one of a number of dlfi'erent points along the slot, thereby determining the point of adjustment of said cam and holding it in its adjusted position. I

13. In a calculating machine, the combination of a carriage, a follower formin part of a totalizer-actuator control mechapositions to on said carrier and co-operative with said follower, a plate fixed to said carrier and having a slot therein, a, member connected with said cam and having a pin received in and adjustable along said slot, a finger piece carried by said .pin and adapted to slide thereon, said plate having a series of locking recesses therein at different points along the slot and in each of which a part of the finger piece is adapted to seat itself to look said member and the cam controlled thereby in adjusted position, and a spring which exerts its pressure on the finger piece and tends to move it into locking engagement in any one of said locking recesses.

14. In a calculating machine, the combination of. a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier adjustable to different positions along said carriage, a cam adjustable on said carrier and co-operative with said follower, a pin located about equal distances from the ends of said cam and operatively connected to move therewith, 'a plate fixed to said carrier and having a slot along which said pin is adapted to move, a link pivoted at one end on said pin and adapted to move bodily therewith as well as to turn thereon, and means for connecting the other end of said link to said fixed plate at any one of a number of different points and thus adjust, the cam and hold it in its adjusted position.

15. In a calculating machine, the combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier adjustable to different positions along saidcarriage, a cam adjustable on said carrier and co-operative with said follower, a pin located about equal distances from the ends of said cam and operatively connected to move therewith, a plate fixed to said carrier and having a slot along which said pin is adapted to move, a link pivoted at one end on said pin and adapted to move bodily therewith as well as to turn thereon, means for connecting the other end of said link to said fixed plate at any one of a number of different points and thus adjust the cam and hold it in its adjusted position, and a second pin and slot connection between said fixed plate and cam, the slot of the last mentioned connection extending in the same direction and located in the same plane as said first mentioned slot.

16. In a calculating machine, the combination ofa carriage, a follower forming part of the totalizer-actuator control mechanism, a carrier adjustable to different positions along said carriage, a cam mounted to receive a rectilinear up and down adjustment on said carrier and guided against latg eral movement on the carrier, a hand-actuated controlling member operatively connected to move bodily up and down with the cam and also to move relatively thereto, a fixed part of the carrier having three notches therein at different elevations, and means carried by said controlling member and adapted to be seated in any of said notches to adjust the cam to and hold it in any of three positions determined by said notches.

17. In a calculating machine, the combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier adjustable to different positions along said carriage, a cam adjustable on said carrier and co-operative with said follower, and means for controlling the adjustment of said cam comprising a slotted April, A. D. 1921.

ROBERT G. C. BOA. Witnesses:

CHARLES E. SMITH, LILLIAN NELSON. 

